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SWT is an open source widget toolkit for Java designed to provide efficient, portable access to the user-interface facilities of the operating systems on which it is implemented.
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/*******************************************************************************
 * Copyright (c) 2000, 2010 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 * 
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
 
/**
 * swt.h
 *
 * This file contains the global macro declarations for the
 * SWT library.
 *
 */

#ifndef INC_swt_H
#define INC_swt_H

#include "jni.h"

#ifdef __cplusplus
extern "C" {
#endif

extern int IS_JNI_1_2;

#ifndef JNI64
#if __x86_64__
#define JNI64
#endif
#endif

/* 64 bit support */
#ifndef JNI64

/* int/long defines */
#define GetIntLongField GetIntField
#define SetIntLongField SetIntField
#define GetIntLongArrayElements GetIntArrayElements
#define ReleaseIntLongArrayElements ReleaseIntArrayElements
#define GetIntLongArrayRegion GetIntArrayRegion
#define SetIntLongArrayRegion SetIntArrayRegion
#define NewIntLongArray NewIntArray
#define CallStaticIntLongMethod CallStaticIntMethod
#define CallIntLongMethod CallIntMethod
#define CallStaticIntLongMethodV CallStaticIntMethodV
#define CallIntLongMethodV CallIntMethodV
#define jintLongArray jintArray
#define jintLong jint
#define I_J "I"
#define I_JArray "[I"

/* float/double defines */
#define GetFloatDoubleField GetFloatField
#define SetFloatDoubleField SetFloatField
#define GetFloatDoubleArrayElements GetFloatArrayElements
#define ReleaseFloatDoubleArrayElements ReleaseFloatArrayElements
#define GetFloatDoubleArrayRegion GetFloatArrayRegion
#define jfloatDoubleArray jfloatArray
#define jfloatDouble jfloat
#define F_D "F"
#define F_DArray "[F"

#else

/* int/long defines */
#define GetIntLongField GetLongField
#define SetIntLongField SetLongField
#define GetIntLongArrayElements GetLongArrayElements
#define ReleaseIntLongArrayElements ReleaseLongArrayElements
#define GetIntLongArrayRegion GetLongArrayRegion
#define SetIntLongArrayRegion SetLongArrayRegion
#define NewIntLongArray NewLongArray
#define CallStaticIntLongMethod CallStaticLongMethod
#define CallIntLongMethod CallLongMethod
#define CallStaticIntLongMethodV CallStaticLongMethodV
#define CallIntLongMethodV CallLongMethodV
#define jintLongArray jlongArray
#define jintLong jlong
#define I_J "J"
#define I_JArray "[J"

/* float/double defines */
#define GetFloatDoubleField GetDoubleField
#define SetFloatDoubleField SetDoubleField
#define GetFloatDoubleArrayElements GetDoubleArrayElements
#define ReleaseFloatDoubleArrayElements ReleaseDoubleArrayElements
#define GetFloatDoubleArrayRegion GetDoubleArrayRegion
#define jfloatDoubleArray jdoubleArray
#define jfloatDouble jdouble
#define F_D "D"
#define F_DArray "[D"

#endif

#ifdef __APPLE__
#define CALLING_CONVENTION
#define LOAD_FUNCTION(var, name) \
		static int initialized = 0; \
		static void *var = NULL; \
		if (!initialized) { \
			CFBundleRef bundle = CFBundleGetBundleWithIdentifier(CFSTR(name##_LIB)); \
			if (bundle) var = CFBundleGetFunctionPointerForName(bundle, CFSTR(#name)); \
			initialized = 1; \
		} 
#elif defined (_WIN32) || defined (_WIN32_WCE)
#define CALLING_CONVENTION CALLBACK
#define LOAD_FUNCTION(var, name) \
		static int initialized = 0; \
		static FARPROC var = NULL; \
		if (!initialized) { \
			HMODULE hm = LoadLibrary(name##_LIB); \
			if (hm) var = GetProcAddress(hm, #name); \
			initialized = 1; \
		}
#else
#define CALLING_CONVENTION
#ifdef AIX
#define LOAD_FLAGS RTLD_LAZY | RTLD_MEMBER
#else
#define LOAD_FLAGS RTLD_LAZY
#endif 
#define LOAD_FUNCTION(var, name) \
		static int initialized = 0; \
		static void *var = NULL; \
		if (!initialized) { \
			void* handle = dlopen(name##_LIB, LOAD_FLAGS); \
			if (handle) var = dlsym(handle, #name); \
			initialized = 1; \
		}
#endif

void throwOutOfMemory(JNIEnv *env);

#define CHECK_NULL_VOID(ptr) \
	if ((ptr) == NULL) { \
		throwOutOfMemory(env); \
		return; \
	}

#define CHECK_NULL(ptr) \
	if ((ptr) == NULL) { \
		throwOutOfMemory(env); \
		return 0; \
	}

#ifdef __cplusplus
}
#endif 

#endif /* ifndef INC_swt_H */